1 // Copyright 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef MEDIA_CAST_RTCP_RTCP_SENDER_H_ 6 #define MEDIA_CAST_RTCP_RTCP_SENDER_H_ 7 8 #include <list> 9 #include <string> 10 11 #include "media/cast/cast_config.h" 12 #include "media/cast/cast_defines.h" 13 #include "media/cast/rtcp/rtcp.h" 14 #include "media/cast/rtcp/rtcp_defines.h" 15 16 namespace media { 17 namespace cast { 18 19 class RtcpSender { 20 public: 21 RtcpSender(scoped_refptr<CastEnvironment> cast_environment, 22 PacedPacketSender* const paced_packet_sender, 23 uint32 sending_ssrc, 24 const std::string& c_name); 25 26 virtual ~RtcpSender(); 27 28 void SendRtcpFromRtpSender(uint32 packet_type_flags, 29 const RtcpSenderInfo* sender_info, 30 const RtcpDlrrReportBlock* dlrr, 31 RtcpSenderLogMessage* sender_log); 32 33 void SendRtcpFromRtpReceiver(uint32 packet_type_flags, 34 const RtcpReportBlock* report_block, 35 const RtcpReceiverReferenceTimeReport* rrtr, 36 const RtcpCastMessage* cast_message, 37 RtcpReceiverLogMessage* receiver_log); 38 39 enum RtcpPacketType { 40 kRtcpSr = 0x0002, 41 kRtcpRr = 0x0004, 42 kRtcpBye = 0x0008, 43 kRtcpPli = 0x0010, 44 kRtcpNack = 0x0020, 45 kRtcpFir = 0x0040, 46 kRtcpSrReq = 0x0200, 47 kRtcpDlrr = 0x0400, 48 kRtcpRrtr = 0x0800, 49 kRtcpRpsi = 0x8000, 50 kRtcpRemb = 0x10000, 51 kRtcpCast = 0x20000, 52 kRtcpSenderLog = 0x40000, 53 kRtcpReceiverLog = 0x80000, 54 }; 55 56 private: 57 void BuildSR(const RtcpSenderInfo& sender_info, 58 const RtcpReportBlock* report_block, 59 std::vector<uint8>* packet) const; 60 61 void BuildRR(const RtcpReportBlock* report_block, 62 std::vector<uint8>* packet) const; 63 64 void AddReportBlocks(const RtcpReportBlock& report_block, 65 std::vector<uint8>* packet) const; 66 67 void BuildSdec(std::vector<uint8>* packet) const; 68 69 void BuildPli(uint32 remote_ssrc, 70 std::vector<uint8>* packet) const; 71 72 void BuildRemb(const RtcpRembMessage* remb, 73 std::vector<uint8>* packet) const; 74 75 void BuildRpsi(const RtcpRpsiMessage* rpsi, 76 std::vector<uint8>* packet) const; 77 78 void BuildNack(const RtcpNackMessage* nack, 79 std::vector<uint8>* packet) const; 80 81 void BuildBye(std::vector<uint8>* packet) const; 82 83 void BuildDlrrRb(const RtcpDlrrReportBlock* dlrr, 84 std::vector<uint8>* packet) const; 85 86 void BuildRrtr(const RtcpReceiverReferenceTimeReport* rrtr, 87 std::vector<uint8>* packet) const; 88 89 void BuildCast(const RtcpCastMessage* cast_message, 90 std::vector<uint8>* packet) const; 91 92 void BuildSenderLog(RtcpSenderLogMessage* sender_log_message, 93 std::vector<uint8>* packet) const; 94 95 void BuildReceiverLog(RtcpReceiverLogMessage* receiver_log_message, 96 std::vector<uint8>* packet) const; 97 BitrateToRembExponentBitrate(uint32 bitrate,uint8 * exponent,uint32 * mantissa)98 inline void BitrateToRembExponentBitrate(uint32 bitrate, 99 uint8* exponent, 100 uint32* mantissa) const { 101 // 6 bit exponent and a 18 bit mantissa. 102 *exponent = 0; 103 for (int i = 0; i < 64; ++i) { 104 if (bitrate <= (262143u << i)) { 105 *exponent = i; 106 break; 107 } 108 } 109 *mantissa = (bitrate >> *exponent); 110 } 111 112 const uint32 ssrc_; 113 const std::string c_name_; 114 115 // Not owned by this class. 116 PacedPacketSender* transport_; 117 scoped_refptr<CastEnvironment> cast_environment_; 118 119 DISALLOW_COPY_AND_ASSIGN(RtcpSender); 120 }; 121 122 } // namespace cast 123 } // namespace media 124 #endif // MEDIA_CAST_RTCP_RTCP_SENDER_H_ 125